15121

15121 is a natural number that sits between 15120 and 15122. In decimal notation it is written as 15121.

Mathematically, 15121 is a prime number. It is not divisible by 2, 3, 5, or any other integer besides 1 and itself. Its digits sum to 10, which confirms it is not a multiple of 3. It is congruent to 1 modulo 4 and to 1 modulo 8. The nearest perfect square is 123^2 = 15129, eight larger than 15121. In hexadecimal, 15121 equals 0x3B11.

Beyond basic arithmetic, 15121 may appear in various contexts as a numeric identifier or data value. In number theory, it is notable mainly for being a prime near a square, rather than for containing a simple algebraic factorization. There are no widely recognized constants or theorems named specifically after 15121.